Final answer:
A higher ASA/ISO setting increases the film or digital sensor's sensitivity to light, allowing for exposures with less light but resulting in more grain or noise in the image.
Step-by-step explanation:
The student's question refers to the relationship between film/digital ASA/ISO, the amount of light needed for an exposure, and the grain or noise in the resulting photograph. The ASA/ISO number reflects the sensitivity of the film or digital sensor to light. A higher ASA/ISO means the film or sensor is more sensitive to light, thus requiring less light for proper exposure. However, this increased sensitivity comes at the cost of more grain or noise in the final image. Therefore, when selecting an ASA/ISO level, photographers must balance the need for light sensitivity with their tolerance for grain or noise.
The correct answer to the student's question is: The higher the film/digital ASA/ISO the less light is needed and there is more grain/noise.